2CW0 image
Deposition Date 2005-06-15
Release Date 2005-09-20
Last Version Date 2023-10-25
Entry Detail
PDB ID:
2CW0
Keywords:
TRANSFERASE
Title:
Crystal structure of Thermus thermophilus RNA polymerase holoenzyme at 3.3 angstroms resolution
Biological Source:
Source Organism:
Thermus thermophilus (Taxon ID: 274)
Thermus thermophilus (Taxon ID: 300852)
Thermus thermophilus (Taxon ID: 262724)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.30 Å
R-Value Free:
0.32
R-Value Work:
0.28
Space Group:
P 32
2CW0 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-directed RNA polymerase alpha chain
Gene (Uniprot):rpoA
Chain IDs:A, B, G (auth: K), H (auth: L)
Chain Length:315
Number of Molecules:4
Biological Source:Thermus thermophilus
UniProt ID:Q5SHR6 Pfam ID:PF01193, PF01000, PF03118 EC:2.7.7.6
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-directed RNA polymerase beta chain
Gene (Uniprot):rpoB
Chain IDs:C, I (auth: M)
Chain Length:1119
Number of Molecules:2
Biological Source:Thermus thermophilus
UniProt ID:Q8RQE9 Pfam ID:PF04563, PF04561, PF04565, PF10385, PF00562, PF04560 EC:2.7.7.6
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-directed RNA polymerase beta' chain
Gene (Uniprot):rpoC
Chain IDs:D, J (auth: N)
Chain Length:1524
Number of Molecules:2
Biological Source:Thermus thermophilus
UniProt ID:Q8RQE8 Pfam ID:PF04997, PF21668, PF00623, PF04983, PF05000, PF04998 EC:2.7.7.6
Protein Blast
Polymer Type:polypeptide(L)
Molecule:RNA polymerase omega chain
Gene (Uniprot):rpoZ
Chain IDs:E, K (auth: O)
Chain Length:99
Number of Molecules:2
Biological Source:Thermus thermophilus
UniProt ID:Q8RQE7 Pfam ID:PF01192 EC:2.7.7.6
Protein Blast
Polymer Type:polypeptide(L)
Molecule:RNA polymerase sigma factor rpoD
Gene (Uniprot):sigA
Chain IDs:F, L (auth: P)
Chain Length:423
Number of Molecules:2
Biological Source:Thermus thermophilus
UniProt ID:Q5SKW1 Pfam ID:PF00140, PF04542, PF04539, PF04545
Ligand Molecules
MG
ZN
Primary Citation
Inhibition of bacterial RNA polymerase by streptolydigin: stabilization of a straight-bridge-helix active-center conformation
Cell(Cambridge,Mass.) 122 541 552 (2005)
PMID: 16122422 DOI: 10.1016/j.cell.2005.07.017

Abstact

We define the target, mechanism, and structural basis of inhibition of bacterial RNA polymerase (RNAP) by the tetramic acid antibiotic streptolydigin (Stl). Stl binds to a site adjacent to but not overlapping the RNAP active center and stabilizes an RNAP-active-center conformational state with a straight-bridge helix. The results provide direct support for the proposals that alternative straight-bridge-helix and bent-bridge-helix RNAP-active-center conformations exist and that cycling between straight-bridge-helix and bent-bridge-helix RNAP-active-center conformations is required for RNAP function. The results set bounds on models for RNAP function and suggest strategies for design of novel antibacterial agents.

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Primary Citation of related structures
2CW0